Method for assuring equal access to all input/output devices cou

Details Method for assuring equal access to all input/output devices cou Method for assuring equal access to all input/output devices cou

1994-11-21

1996-08-13

Harvey, Jack B.

395853, G06F 1314

Patent

active

055465501

ABSTRACT:
The present invention is useful in a data processing system having a data processor coupled to a SCSI channel disposed for transmitting and receiving data between the data processor and a peripheral storage subsystem having a multiplicity of disk drives. A method for assuring fair access to all disk drives connected to the SCSI channel by assigning a weighted value to I/O commands when they are issued to the SCSI device. The weighted value is determined on the basis of the length of the data to be transferred by the device. The greater the length of the data to be transferred, the larger the weighted value assigned thereto.

REFERENCES:
patent: 5099420 (1992-03-01), Barlow et al.
patent: 5426736 (1995-06-01), Guineau, III

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